Add Websocket Queue

[cinoan]

Queue websocket requests from the client to avoid an issue with the server not receiving/responding to all requests if sent together. Fixes #65

[forkineye]

Thank you! This was the only thing holding up 3.0 and I've just been so busy lately that I haven't had time to work on the code. I'm out of town, but will merge and test next week. Thanks again!

[cinoan]

Definitely needs a good test but seems ok here and the interface works well on my Galaxy S8 now which always hit the issue before.

[penfold42]

It seems to be really laggy on the static test.

In the past you could set the colour in real time but now it’s laggy. Even a single click on a colour might take a second to show up on the leds

[cinoan]

Yes I saw the issue yesterday and wondered if it was in this version or was remnants from another commit I reverted, The issue is that when a request is sent it waits for a reply before sending the next message, or times out after 2 seconds. As the test mode requests don't get a response the get caught in this delay. I'll work on a fix now.